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Sigma-Aldrich

Zirconium(IV) oxide

Technipur®

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Synonym(s):
Zirconia, Zirconium dioxide, Zirconium oxide
Linear Formula:
ZrO2
CAS Number:
Molecular Weight:
123.22
MDL number:
UNSPSC Code:
12352303
NACRES:
NA.21

Quality Level

pH

3-4 (20 °C, 50 g/L in H2O, slurry)

bp

5000 °C (lit.)
5000 °C

mp

2700 °C (lit.)

density

5.89 g/mL at 25 °C (lit.)

SMILES string

O=[Zr]=O

InChI

1S/2O.Zr

InChI key

MCMNRKCIXSYSNV-UHFFFAOYSA-N

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General description

Zirconium oxide (ZrO2) is a metal oxide with mechanical strength similar to steel hence referred to as ceramic steel. Some of its other properties include high biocompatibility, chemical inertness, resistance to corrosion, high dielectric constant, large bandgap, and high thermal resistance. Pure zirconia is susceptible to fracture due to phase transformation at elevated temperature which can be overcome by adding stabilizers such as yttria to form yttrium-stabilized zirconia or yttria tetragonal zirconia polycrystals.

Application

Currently, titanium and its alloys are widely used in implant dentistry. But they pose challenges such as potential immunologic response and its dark grayish color which affects the esthetics. The natural white color, mechanical properties, higher osseointegration, and biocompatibility of ZrO2 make it an ideal candidate as a dental biomaterial for implants and crowns compared to titanium-based systems.

The doping of ZrO2 with Ce4+ ions makes it photosensitive to visible light leading to the formation of a 3rd generation photoactive system with potential applications in photocatalysis.

Legal Information

Technipur is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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Rare earth oxides in zirconium dioxide: How to turn a wide band gap metal oxide into a visible light active photocatalyst.
Gionco C, et al.
Journal of Energy Chemistry, 26(2), 270-276 (2017)
Synthesis of nano zirconium oxide and its application in dentistry.
Hu C, et al.
Nanotechnology Reviews, 8(1), 396-404 (2019)
Zirconia dental implants: a literature review.
Ozkurt Z & Kazazoglu E.
The Journal of Oral Implantology, 37(3), 367-376 (2011)
Is zirconia a viable alternative to titanium for oral implant? A critical review.
Sivaraman K, et al.
Journal of Prosthodontic Research, 62(2), 121-133 (2018)

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